#define BLYNK_TEMPLATE_ID "TMPL6wwVOY3xa"
#define BLYNK_TEMPLATE_NAME "Kontrol Monitoring Kelembapan"
#define BLYNK_AUTH_TOKEN "9uSU53I2hYY4Id1ccxmIvv0bWOHA-01z"

#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>

#define pompa air 26


char auth[] = BLYNK_AUTH_TOKEN;
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

// Konfigurasi LCD
LiquidCrystal_I2C lcd(0x27, 16, 2);

// Pin konfigurasi
const int soilMoisturePin = 34;  // Pin sensor soil moisture
const int phSensorPin = 35;      // Pin sensor pH tanah
const int relay1Pin = 26;        // Relay untuk pompa air


// Variabel batasan
const int soilMoistureThreshold = 50; // Batas kelembapan (%) untuk mengaktifkan pompa air


// Variabel global
int soilMoistureValue = 0; // Nilai kelembapan tanah


void setup() {
  // Inisialisasi Serial, LCD, dan WiFi
  Serial.begin(115200);
  lcd.init();
  lcd.backlight();

  // Inisialisasi relay
  pinMode(26, OUTPUT);
  digitalWrite(26, HIGH); // Matikan pompa air awal
  

  // Inisialisasi Blynk
  Blynk.begin(auth, ssid, pass);

  // Informasi awal di LCD
  lcd.setCursor(0, 0);
  lcd.print("Starting System");
  delay(2000);
  lcd.clear();
}

void loop() {
  Blynk.run();

  // Membaca sensor soil moisture
  soilMoistureValue = readSoilMoisture();


  // Menampilkan nilai ke LCD
  lcd.setCursor(0, 0);
  lcd.print("Soil: ");
  lcd.print(soilMoistureValue);
  lcd.print("%");


  // Kontrol pompa air
  if (soilMoistureValue > soilMoistureThreshold) {
    digitalWrite(relay1Pin, LOW); // Pompa air aktif
    lcd.setCursor(10, 0);
    lcd.print("Air:OFF ");
    Serial.println("Pompa Air: Mati");
  } else {
    digitalWrite(relay1Pin, HIGH); // Pompa air mati
    lcd.setCursor(10, 0);
    lcd.print("Air:ON  ");
    Serial.println("Pompa Air: Aktif");
  }

  

  // Kirim data ke Blynk
  Blynk.virtualWrite(V0, soilMoistureValue);  // Kelembapan tanah
  Blynk.virtualWrite(V1, digitalRead(relay1Pin) == LOW ? "OFF" : "ON"); // Status pompa air
  
  delay(1000); // Delay 1 detik
}

// Fungsi membaca sensor soil moisture
int readSoilMoisture() {
  int rawValue = analogRead(soilMoisturePin);
  int moisture = map(rawValue, 0, 4095, 0, 100); // Kalibrasi nilai menjadi 0-100%
  return constrain(moisture, 0, 100); // Pastikan nilai tetap di 0-100
}